Nickel 684 vs. Grade 350 Maraging Steel
Nickel 684 belongs to the nickel alloys classification, while grade 350 maraging steel belongs to the iron alloys. They have a modest 38% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is nickel 684 and the bottom bar is grade 350 maraging steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 11 | |
| 4.1 to 18 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 76 | |
| 75 |
| Shear Strength, MPa | 710 | |
| 710 to 1400 |
| Tensile Strength: Ultimate (UTS), MPa | 1190 | |
| 1140 to 2420 |
| Tensile Strength: Yield (Proof), MPa | 800 | |
| 830 to 2300 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 270 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1470 |
| Melting Onset (Solidus), °C | 1320 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 450 |
| Thermal Expansion, µm/m-K | 13 | |
| 12 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 75 | |
| 39 |
| Density, g/cm3 | 8.3 | |
| 8.2 |
| Embodied Carbon, kg CO2/kg material | 10 | |
| 5.6 |
| Embodied Energy, MJ/kg | 140 | |
| 74 |
| Embodied Water, L/kg | 360 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 120 | |
| 98 to 190 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 23 |
| Strength to Weight: Axial, points | 40 | |
| 38 to 82 |
| Strength to Weight: Bending, points | 30 | |
| 29 to 49 |
| Thermal Shock Resistance, points | 34 | |
| 35 to 74 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.3 | |
| 0.050 to 0.15 |
| Boron (B), % | 0.0030 to 0.010 | |
| 0 to 0.0030 |
| Calcium (Ca), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 to 0.15 | |
| 0 to 0.030 |
| Chromium (Cr), % | 15 to 20 | |
| 0 |
| Cobalt (Co), % | 13 to 20 | |
| 11.5 to 12.5 |
| Copper (Cu), % | 0 to 0.15 | |
| 0 |
| Iron (Fe), % | 0 to 4.0 | |
| 61.2 to 64.6 |
| Manganese (Mn), % | 0 to 0.75 | |
| 0 to 0.1 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 4.6 to 5.2 |
| Nickel (Ni), % | 42.7 to 64 | |
| 18 to 19 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 to 0.010 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 to 0.1 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.010 |
| Titanium (Ti), % | 2.5 to 3.3 | |
| 1.3 to 1.6 |
| Zirconium (Zr), % | 0 | |
| 0 to 0.020 |